Implement section 2.1 and parts of section 4.1 from the Send Android spec (#901)

* Fix #877 Implement Start page (Empty State) Design

* Update some kotlin and android sdk things, and update to the latest code in vnext

* Begin implementing the card ui which shows after uploading.

* Implement a progress bar.

android/app/src/main/AndroidManifest.xml

@@ -12,6 +12,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+        <meta-data android:name="android.webkit.WebView.EnableSafeBrowsing" android:value="false" />
         <activity android:name=".MainActivity" android:screenOrientation="portrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

android/app/src/main/assets/index.css

@@ -1,20 +1,11 @@
-body {
-  background: url('background_1.jpg');
-  display: flex;
-  flex-direction: row;
-  flex: auto;
-  justify-content: center;
-  align-items: center;
-  padding: 0 20px;
-  box-sizing: border-box;
-  position: fixed;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
+html {
+  height: 100vh;
 }
 
-#striped {
+body {
+  box-sizing: border-box;
+  margin: 0;
+  min-height: 100vh;
   background-image: repeating-linear-gradient(
     45deg,
     white,
@@ -26,32 +17,37 @@ body {
     #0083ff 30px,
     #0083ff 50px
   );
-  height: 350px;
-  width: 480px;
 }
 
 #white {
+  display: flex;
+  flex-direction: column;
+  min-height: 100vh;
+  background-color: white;
+  margin: 0 10px;
+  padding: 10px;
+  text-align: center;
+}
+
+#centering {
+  flex: 1;
   display: flex;
   justify-content: center;
   align-items: center;
   flex-direction: column;
   height: 100%;
-  background-color: white;
-  margin: 0 10px;
-  padding: 1px 10px 0 10px;
+  width: 100%;
 }
 
 #label {
-  background: #0297f8;
-  border: 1px solid #0297f8;
-  color: white;
-  font-size: 24px;
-  font-weight: 500;
+  position: fixed;
+  right: 2em;
+  bottom: 1em;
+}
+
+#label img {
   height: 60px;
-  width: 200px;
-  display: flex;
-  justify-content: center;
-  align-items: center;
+  width: 60px;
 }
 
 #input {
@@ -59,26 +55,38 @@ body {
 }
 
 #url {
-  flex: 1;
-  width: 100%;
-  height: 32px;
-  font-size: 24px;
-  margin-top: 1em;
+  display: none;
 }
 
-.button {
-  flex: 1;
-  display: block;
-  background: #0297f8;
-  border: 1px solid #0297f8;
-  color: white;
-  font-size: 24px;
-  font-weight: 500;
-  width: 95%;
-  height: 32px;
-  margin-top: 1em;
+#copy-link {
+  text-align: right;
+}
+
+#copy-image {
+  position: relative;
+  top: 6px;
+  height: 30px;
+  width: 30px;
+}
+
+.spacer {
+  height: 12em;
 }
 
 #send-another {
   margin-bottom: 1em;
+  height: 60px;
+  width: 60px;
+  position: fixed;
+  right: 2em;
+  bottom: 1em;
+}
+
+.card {
+  margin: 6px;
+  padding: 6px;
+  border: 1px solid white;
+  border-radius: 5px;
+  box-shadow: 5px 5px 5px 5px #d5d5d5;
+  text-align: left;
 }